DAISY MOTOR

Magnet details

0.8mm copper disc is used with slots cut with a saw. It is then pasted to a 4mm fibre glass disc. Metal carbon brush is used for the contact. Power supply consists of 'Layer' grounded transformer with ELCB to trip in case of any leakage. A SS resistor is connected in series to limit the current in case of short circuit. To avoid overheating of the power supply a timer is used to control the exhibit time. Magnets used are from old Winchister Hard drives with poles rearranged.

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ELECTRIC FLEA

Clear 5mm Acrylic sheet is sunk into a wooden box so that it can be taken out for cleaning. Styrofoam pieces are spread over below the acrylic sheet.

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EARTH'S MAGNETIC FIELD

A 100mm compass is mounted inside a 200 mm dia coil. A power supply is provided along with a potentiometer to control the current.The assembly is housed in an acrylic enclosure for safety.

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CLIMBING ARC

O A standard 15000v ,30ma standard neon transformer is used.

O For positive starting of the arc a Gabriel electrode with two

1 mega ohm resistors are connected.

O Safety features are, Acrylic enclosure, Circular guard rail,

wooden table, ELCB for Leakage protection.

CAUTION, Only authorised personnel only to attend in case of any fault.

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